C4 injector gone bad
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 49
Likes: 3
C4 injector gone bad
Hi, did an ohms test and it seems as if an injector has gone bad.
1. Will injector cleaner bring it back (royal Purple atomiser)?
2. Do I replace the one injector or replace them all?
1. Will injector cleaner bring it back (royal Purple atomiser)?
2. Do I replace the one injector or replace them all?
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,074
From: Lansing MI
If it failed electrically then cleaner wont help. You didn't say the year of the car but typically people will replace the set of injectors and not just one. But, there is nothing stopping you from replacing just one.
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,074
From: Lansing MI
Team Owner
Joined: Jul 2004
Posts: 28,432
Likes: 3,285
From: Hartford WI
2. Depends on you. If you are selling the car, buy something from a junkyard that is similar size and most important, cheap. If you are keeping the car, get FIC to sell you a reman set that has been tested. If they are Multec injectors, they belong in the trash can before they were installed. They don't play nice with ethanol. IIRC the coils were fuel cooled and ethanol and the insulation don't get along. If the snake oils drain your wallet at purchase time, you are lucky. At worst, they could eat the rest of the coils up.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Thread Starter
Intermediate
Joined: Nov 2014
Posts: 49
Likes: 3
Ok so the new injectors are in and I will be refitting the plenum tomorrow with new gaskets, I notice the gasket set comes with silicon sealant, do I need to use this on the plenum gaskets? I notice in a few you tube vids that people are able to re-use there gaskets when doing an injector swap suggesting they haven’t used any sticky stuff, is this the case? My original gaskets didn’t seem to have any, but were not salvageable due to age.
Last edited by Tony Trans Am; Apr 6, 2018 at 02:50 PM.
Instructor
Joined: Dec 2012
Posts: 105
Likes: 15
From: Ball Ground Georgia
Ok so the new injectors are in and I will be refitting the plenum tomorrow with new gaskets, I notice the gasket set comes with silicon sealant, do I need to use this on the plenum gaskets? I notice in a few you tube vids that people are able to re-use there gaskets when doing an injector swap suggesting they haven’t used any sticky stuff, is this the case? My original gaskets didn’t seem to have any, but were not salvageable due to age.
Team Owner
Joined: Jul 2004
Posts: 28,432
Likes: 3,285
From: Hartford WI
Ok so the new injectors are in and I will be refitting the plenum tomorrow with new gaskets, I notice the gasket set comes with silicon sealant, do I need to use this on the plenum gaskets? I notice in a few you tube vids that people are able to re-use there gaskets when doing an injector swap suggesting they haven’t used any sticky stuff, is this the case? My original gaskets didn’t seem to have any, but were not salvageable due to age.
Why would you even want to reuse the paper gasket? I don't even like it when I have to reuse rubber that has been sitting for a while. After sex, do you wonder if you can reuse the condom?